【摘要】 采用最优混合设计,探讨杂交玉米玉美头168种子生产与种植密度和氮、磷、钾肥配套施用间关系回归模型,分析各因素对种子产量的作用效应,利用计算机模拟,优化筛选出公顷种植80100株、施纯N 269.91kg、P2O5 100.78kg和K2O 187.90kg相配套可获最高产量,公顷种植79360株、施纯N161.55kg、P2O5 66.9kg和K2O 171.15kg可获扣除肥料成本最高利润的种植方案。更多还原

【Abstract】 This test was to study the regression model about the planting density and the matching ap-plication NPK by optimum compound design in hybrid maize yumeitou 168 seed production.Then anal-ysis various factors to action effects in seed yield,modeling by computer,the results indicated that the density was 80100 plants/hm2 and the volume of fertilizer delivery was N of 269.91kg/hm2,P2O5 of 100.78kg/hm2,K2O of 187.9kg/hm2,it can obtain the maximum yield.The density was 79360 plants/hm2 and the volume of fertilizer delivery was N of 161.55kg/hm2,P2O5 of 66.9kg/hm2,K2O of 171.15kg/hm2,it can receive the planting plans with maximum profit that deduct the cost of the fertilizer.更多还原